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(11) | EP 2 345 609 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Conveying device, image forming apparatus, and program |
(57) An image forming apparatus includes a feed unit (1), a sensor (430), a control unit
(115), a measuring unit (117), and a determining unit (119). The feed unit (1) conveys
a sheet P. The sensor (430) detects the sheet P being conveyed. The control unit (115)
controls to change the force acting on the sheet from that is in normal conveyance
of the sheet. The measuring unit (117) measures a measurement value related to conveyance
speed of the detected sheet with the acting force changed. The determining unit (119)
determines whether there is an indication of abnormality in conveyance of the sheet
on the basis of the measurement value.
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